Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 1 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/26/2015   10:40:10   (  -0.10,-134.78) (   0.31,-136.70)  217.58                80
 01/27/2015   10:18:43   (  -0.09,-134.83) (  -0.67,-132.15)  304.06                80
 01/28/2015   22:40:36   (   0.09,-134.89) (  -0.51,-137.45)  293.26                80
 01/29/2015   22:24:29   (   0.09,-134.93) (   0.52,-132.92)  228.39                80
 01/31/2015   10:46:14   (  -0.08,-135.00) (   0.64,-138.19)  364.04                80
 02/01/2015   10:24:47   (  -0.08,-135.03) (  -0.40,-133.66)  157.04                80
 02/02/2015   22:46:41   (   0.08,-135.08) (  -0.78,-138.96)  441.44                80
 02/03/2015   22:30:34   (   0.08,-135.12) (   0.26,-134.43)   79.77                80
 02/06/2015   10:30:51   (  -0.07,-135.22) (  -0.08,-135.15)    7.73                80